ITO conductive film

Abstract

The utility model discloses a kind of ITO conductive films, including substrate layer, hard layer, shadow elimination layer and ITO conductive layer which are sequentially laminated, the substrate layer includes substrate body and the bottom coating layer of being arranged at the opposite two sides of substrate body, the hard layer is located on the bottom coating layer, the refractive index of the bottom coating layer is 1.50~1.55, the refractive index of the hard layer is 1.50~1.55, the thickness of the shadow elimination layer is 70~85nm, the refractive index of the shadow elimination layer is 1.60~1.65.The ITO conductive film of the utility model is through the design of entire conductive film and the selection of each layer, especially through the design of the thickness and refractive index of shadow elimination layer, so that the b ＊ Value can be in-6~-4, applicable to the preparation of specific ECD (light control color-changing device), meet the use demand of user.

Description

Technical Field

[0001] This utility model belongs to the field of conductive film technology, and specifically relates to an ITO conductive film. Background Technology

[0002] As automobiles become increasingly electrified and intelligent, and as people's demands for comfort in automobiles continue to rise, cars are becoming more and more feature-rich, and new technologies will emerge for sunroof systems.

[0003] Currently available smart car sunroof solutions include PDLC (polymer dispersed liquid crystal), EC (electro-modulated color), and SPD (suspension particle). This solution uses EC intelligent dimming. The ECD (electro-modulated color device) includes conductive films on both opposite sides, typically ITO conductive films, which serve as electrodes for the ECD.

[0004] Because the structure or materials of ECDs (Electronic Dimming and Color Changing Devices) vary from manufacturer to manufacturer, they require specific b... ＊ Only ITO conductive films with a value range can make the entire ECD (Electronic Disc Resizer) appear neutral in color.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide an ITO conductive film, whose b ＊ A value of -6 to -4 can meet the requirements of specific ECDs (Dimming and Color Changing Devices) regarding the ITO conductive film's b... ＊ The value requirement ensures that the ECD (Electronic Dimming Device) displays a neutral color.

[0007] To achieve the above objectives, a specific embodiment of this utility model provides the following technical solution: an ITO conductive film, comprising a substrate layer, a hardening layer, an anti-reflection layer, and an ITO conductive layer stacked sequentially, wherein the substrate layer comprises a substrate body and a base coating layer disposed on opposite sides of the substrate body, the hardening layer is disposed on the base coating layer, the refractive index of the base coating layer is 1.50~1.55, the refractive index of the hardening layer is 1.50~1.55, the thickness of the anti-reflection layer is 70~85nm, and the refractive index of the anti-reflection layer is 1.60~1.65.

[0008] In one or more embodiments of this utility model, the thickness of the hardening layer is 800~1500nm.

[0009] In one or more embodiments of this utility model, the thickness of the substrate layer is 188~250μm.

[0010] In one or more embodiments of this utility model, the thickness of the substrate layer is 188 μm.

[0011] In one or more embodiments of this utility model, the substrate body is a PET substrate.

[0012] In one or more embodiments of this invention, the refractive index of the base coating is 1.53.

[0013] In one or more embodiments of this utility model, the ITO conductive film is characterized by b ＊ Values ​​range from -6 to -4

[0014] In one or more embodiments of this utility model, the thickness of the ITO conductive layer is 125~200nm.

[0015] In one or more embodiments of the present invention, the ITO conductive film further includes an anti-adhesion layer, which is disposed on the side of the substrate layer facing away from the hardening layer.

[0016] In one or more embodiments of this utility model, the thickness of the anti-adhesion layer is 800~1000nm.

[0017] Compared with existing technologies, the ITO conductive film of this invention, through the design of the entire conductive film and the selection of each layer, especially through the design of the thickness and refractive index of the anti-reflection layer, thereby improving the overall performance of the ITO conductive film. ＊ The value can range from -6 to -4, making it suitable for preparing specific ECDs (dimming and color-changing devices) and meeting user needs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an ITO conductive film in one example of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the ITO conductive film in another example of this utility model.

[0021] Explanation of key figure labels:

[0022] 1. Substrate layer; 11. Substrate body; 12. Primer layer; 2. Hardening layer; 3. Anti-reflection layer; 4. ITO conductive layer; 5. Anti-adhesion layer. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0024] ITO conductive film is a common type of conductive film, mainly consisting of a substrate and an ITO layer, which is the core structure of the ITO conductive film. Because the structure or materials of ECDs (Electronic Disc Resizers) from different manufacturers vary, as they require specific b... ＊ Only ITO conductive films with a b-value within a certain range can ensure that the entire ECD (Electronic Disc Resizer) displays a neutral color. For example, the b-value of the ITO conductive film in a certain ECD needs to be between -6 and -4.

[0025] like Figure 1 As shown, in one example of this utility model, the ITO conductive film includes a substrate layer 1, a hardening layer 2, an anti-reflection layer 3, and an ITO conductive layer 4 stacked sequentially. The substrate layer 1 includes a substrate body 11 and a base coating layer 12 disposed on opposite sides of the substrate body 11. The hardening layer 2 is disposed on the base coating layer 12. The refractive index of the base coating layer 12 is 1.50~1.55, the refractive index of the hardening layer 2 is 1.50~1.55, the thickness of the anti-reflection layer 3 is 70~85nm, and the refractive index of the anti-reflection layer 3 is 1.60~1.65.

[0026] b ＊ The value is the chromaticity b. ＊ The value is a key parameter in the CIE Lab color space (a standardized color measurement system used in industry, scientific research, printing, and other fields). Its core function is to quantify the "yellow-blue" bias of a color, and to characterize the "red-green" bias. ＊ The value and the L value (lightness), which represents brightness, together constitute a three-dimensional color description system, enabling precise definition and contrast of colors. ＊ The value's positive or negative sign directly corresponds to the yellow / blue tendency of the color; the magnitude of the value reflects the strength of this tendency. It has no unit (it is only a standardized quantification value); b ＊ A positive value indicates a yellowish tint; the higher the value, the more pronounced the yellow hue (e.g., b). ＊ =+10 is light yellow, b ＊=+30 is dark yellow); b ＊ A negative value indicates a bluish tint; the larger the absolute value, the more intense the blue tone (e.g., b). ＊ =-5 is light blue, b ＊ =-25 is dark blue); b ＊ A value approximately 0 indicates a color with virtually no yellow or blue bias, exhibiting a neutral color (such as pure gray, white, or black). In short: b ＊ The higher the value, the yellower it is; b ＊ The smaller the value (the more negative), the bluer it is. ＊ The closer the value is to 0, the more neutral the color appears.

[0027] Although the ITO conductive film of this invention has b ＊ The value can be between -6 and -4. The ITO conductive film of this invention is part of an ECD (Electronic Disc Resistant Device). The ultimate goal is for the entire ECD to be a neutral color, because for a specific ECD, what is needed is b. ＊ ITO conductive films with values ​​ranging from -6 to -4.

[0028] It can be understood that the ITO conductive film of this invention, through the design of the layer structure and the selection of each layer, especially through the design of the thickness and refractive index of the anti-reflection layer 3, thereby improving the overall ITO conductive film's properties. ＊ The value can be between -6 and -4.

[0029] The applicant discovered that the chromaticity b of existing ITO conductive films... ＊ A clear structure-property relationship has not yet been established between the value and the composition and parameters of its layered structure. Existing theories are insufficient to provide precise guidance on how to obtain a specific b value through structural design. ＊ The ITO conductive film has a value (e.g., -6 to -4), which means that the process development of ITO conductive films relies heavily on empirical exploration.

[0030] Therefore, through extensive experimentation, the applicant accidentally discovered the b-value of the ITO conductive film of this invention. ＊ The value can reach -6 to -4, and it has the advantages of simple structure, convenient preparation and low cost.

[0031] Specifically, the anti-reflection layer 3 can be prepared using commercially available anti-reflection coating solutions, such as Lien and NOA160, Lien and NOA1624, and Lien and NOA165H.

[0032] Specifically, the thickness of the hardening layer 2 is 800~1500nm. The refractive index of the hardening layer 2 is 1.52. The hardening layer 2 can be made from commercially available hardening coating liquids, such as Mitsubishi's 3256.

[0033] Specifically, the thickness of the substrate layer 1 is 188~250μm; preferably, the thickness of the substrate layer 1 is 188μm.

[0034] Specifically, the substrate layer 1 includes a substrate body 11 and a base coating layer 12 disposed on both opposite sides of the substrate body 11. The substrate body 11 is a PET substrate. The refractive index of the base coating layer 12 is 1.50~1.55, preferably 1.53. That is, the hardening layer 2 is formed on a base coating layer 12.

[0035] Specifically, the thickness of the ITO conductive layer 4 is 125-200nm.

[0036] like Figure 2 As shown in another specific example, the ITO conductive film of this invention further includes an anti-adhesion layer 5. The anti-adhesion layer 5 is disposed on the side of the substrate layer 1 facing away from the hardening layer 2, that is, on the base coating layer 12 on the side of the substrate layer 1 facing away from the hardening layer 2. The anti-adhesion layer 5 mainly serves to prevent adhesion, facilitating the winding of the ITO conductive film. The anti-adhesion layer 5 can be formed from a conventional anti-adhesion coating liquid (the main component of which includes resin). The anti-adhesion layer 5 affects the overall ITO conductive layer 4. ＊ The impact of the value is almost negligible.

[0037] Furthermore, the thickness of the anti-adhesion layer 5 is 800~1000nm, and the refractive index of the anti-adhesion layer 5 is 800~1000nm.

[0038] The ITO conductive film of this utility model will be described in detail below with reference to specific embodiments and comparative examples.

[0039] Example 1

[0040] Obtain as Figure 1 The ITO conductive film shown has a substrate layer thickness of 188 μm, the substrate body is a PET substrate, and the refractive index of the bottom coating is 1.53; the hardening layer is made by coating with Mitsubishi 3256, with a thickness of 1200 nm and a refractive index of 1.52; the anti-reflection layer is made by coating with Lien and NOA160, with a thickness of 70 nm and a refractive index of 1.60; and the ITO conductive layer has a thickness of 125 nm.

[0041] Example 2

[0042] Obtain as Figure 1 The ITO conductive film shown has a substrate layer thickness of 188 μm, the substrate body is a PET substrate, and the refractive index of the bottom coating is 1.53; the hardening layer is prepared by coating with Mitsubishi 3256, with a thickness of 1200 nm and a refractive index of 1.52; the anti-reflection layer is prepared by coating with Lien and NOA1624 liquid, with a thickness of 78 nm and a refractive index of 1.63; and the ITO conductive layer has a thickness of 125 nm.

[0043] Example 3

[0044] Obtain as Figure 1 The ITO conductive film shown has a substrate layer thickness of 188 μm, the substrate body is a PET substrate, and the refractive index of the bottom coating is 1.53; the hardening layer is made by coating with Mitsubishi 3256, with a thickness of 1200 nm and a refractive index of 1.52; the anti-reflection layer is made by coating with Lien and NOA165H, with a thickness of 85 nm and a refractive index of 1.65; and the ITO conductive layer has a thickness of 125 nm.

[0045] Example 4

[0046] Obtain as Figure 1 The ITO conductive film shown has a substrate layer thickness of 188 μm, the substrate body is a PET substrate, and the refractive index of the bottom coating is 1.53; the hardening layer is made by coating with Mitsubishi 3256, with a thickness of 1200 nm and a refractive index of 1.52; the anti-reflection layer is made by coating with Lien and NOA1624, with a thickness of 78 nm and a refractive index of 1.63; and the ITO conductive layer has a thickness of 200 nm.

[0047] Example 5

[0048] Obtain as Figure 1 The ITO conductive film shown has a substrate layer thickness of 188 μm, the substrate body is a PET substrate, and the refractive index of the bottom coating is 1.53; the hardening layer is made by coating with Mitsubishi 3256, with a thickness of 1200 nm and a refractive index of 1.52; the anti-reflection layer is made by coating with Lien and NOA1624, with a thickness of 78 nm and a refractive index of 1.63; and the ITO conductive layer has a thickness of 200 nm.

[0049] Example 6

[0050] Obtain as Figure 1 The ITO conductive film shown has a substrate layer thickness of 188 μm, the substrate body is a PET substrate, and the refractive index of the bottom coating is 1.53; the hardening layer is made by coating with Mitsubishi 3256, with a thickness of 1200 nm and a refractive index of 1.52; the anti-reflection layer is made by coating with Lien and NOA165H, with a thickness of 78 nm and a refractive index of 1.65; and the ITO conductive layer has a thickness of 200 nm.

[0051] Comparative Example 1

[0052] The only difference between this comparative example and Example 1 is that the thickness of the anti-reflection layer is 65 nm.

[0053] Comparative Example 2

[0054] The only difference between this comparative example and Example 1 is that the thickness of the anti-reflection layer is 90 nm.

[0055] Comparative Example 3

[0056] The only difference between this comparative example and Example 1 is that the refractive index of the ablation layer is 1.58 (Lion and NOA61).

[0057] Comparative Example 4

[0058] The only difference between this comparative example and Example 1 is that the refractive index of the ablation layer is 1.70 (Lynn and NOA170).

[0059] The ITO conductive films from Examples 1-6 and Comparative Examples 1-4 were tested for their b... ＊ value

[0060] The data in the table below was obtained.

[0061]

[0062] As shown in the table above, the b of the ITO conductive film of this invention... ＊ The value is between -6 and -4, which meets the user's requirements and makes it easy for the user to use it to prepare ECD (dimming and color-changing device) and make the light of the ECD (dimming and color-changing device) neutral in tone.

[0063] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0064] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An ITO conductive film, characterized in that, The material comprises a substrate layer, a hardening layer, an anti-reflection layer, and an ITO conductive layer, which are stacked sequentially. The substrate layer includes a substrate body and a base coating layer disposed on opposite sides of the substrate body. The hardening layer is disposed on the base coating layer. The refractive index of the base coating layer is 1.50~1.

55. The refractive index of the hardening layer is 1.50~1.

55. The thickness of the anti-reflection layer is 70~85nm. The refractive index of the anti-reflection layer is 1.60~1.

65.

2. The ITO conductive film according to claim 1, characterized in that, The thickness of the hardening layer is 800~1500nm.

3. The ITO conductive film according to claim 1, characterized in that, The thickness of the substrate layer is 188~250μm.

4. The ITO conductive film according to claim 3, characterized in that, The thickness of the substrate layer is 188 μm.

5. The ITO conductive film according to claim 1, characterized in that, The substrate body is a PET substrate.

6. The ITO conductive film according to claim 1, characterized in that, The refractive index of the base coating is 1.

53.

7. The ITO conductive film according to claim 1, characterized in that, b of the ITO conductive film ＊ The value is -6 to -4.

8. The ITO conductive film according to claim 1, characterized in that, The thickness of the ITO conductive layer is 125~200nm.

9. The ITO conductive film according to claim 1, characterized in that, The ITO conductive film also includes an anti-adhesion layer, which is disposed on the side of the substrate layer facing away from the hardening layer.

10. The ITO conductive film according to claim 9, characterized in that, The thickness of the anti-adhesion layer is 800~1000nm.

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